Dust-collector.



F. J. MATGHETTE.

DUST COLLECTOR.

APPLICATION FILED JAN.2. 1907.

Patented June 22, 1909.

3 SHEETS-SHEET 1.

P. J. MATGHETTE.

DUST COLLECTOR.

APPLICATION FILED JAN. 2, 1907.

Patented June 22, 1909.

3SHEETS-SHEET 2.

F. J. MATCHETTE.

DUST COLLECTOR.

APPLICATION FILED JAN.2, 1907 926,070. Patented June 22, 1909.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

DUST-COLLECTOR.

Specification of Letters Patent.

Patented June 22, 1909.

Continuation of application Serial No. 235,936, filed December 8, 1904. This application filed January 2,

1907. Serial No. 360,434.

To all whom it may concern:

Be it known that I, FRANK J. l\d-A'ICIIE1"IE, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee .and State of Wisconsin, have invented certain new and useful Improvements in Dust-Collectors, of which the followim is a speeification, reference being had to the accompanying drawing, forming a part thereof.

The main objects of this invention are to separate and remove dust and dirt from air with which they are taken up or mingled, and generally to improve the construction and operation of devices of this class.

It consists in certain novel features of construction and in the peculiar arrangement and combinations of parts as hereinafter particularly described and defined in the claims.

' In the accom )anying drawing like characters designate t 1e same parts in the several figures.

Figure 1 is a central vertical section on the line 1 1, Fig. 2, of a dust collector embodying the invention; Fig. 2 is a cross section on the line 2' 2, Fig. 1 Fig. 3 is an enlarged longitudinal section of the ejector; Fig. 4 is a pers )ective view of the removable closure for the dust receptacles in the lower part of the device; Fig. 5 is an enlarged view partly in plan and partly in horizontal section on the line 5 5, Fig. 6, of the closure. and associated parts of the dust collector; Fig. 6 is a view of the same partly in side elevation and partly in section on the line 6 6, Fig. 5; Fig. 7 is a front elevation on an enlarged scale of one of the fastenings for securing the removable internal parts of the device in the main or outer casing; Fig. 8 is a vertical section of the same and of associated parts on the line 8 8, Fig, 2; Fi 9 is a perspective view of the eccentric bo t forming a part of each fastening; Figs. 10, 1 1, 12 and 13 are detail views in perspective of parts for spreading and supporting the strainer bag; and Fig. 14 is an enlarged View partly in section and partly in side elevation showing the strainer spreading and sup orting devices assembled in connection wit 1 associated parts of the dust collector.

The apparatus herein shown and described for the purpose of illustration is intended and designed more particularly for use in connection with portable cleaning implements, to

be connected therewith by hose or flexible pipes for taking up and removing dust and dirt from floors, carpets, furniture and the like, and is provided with an ejector for exhausting air therefrom and producing an air current through the same and through the cleaning implements, but with little or no change in the essential parts of the apparatus it may be adapted to strain and purify air for ventilation and other :-urposes, and the air current for operating t 10 same may be produced by pressure as well as by suction.

Referring to the accompanying drawing the apparatus com )Iises a main or outer casing 1, open at the bottom and closed at the top, an inner shell or casing 2, having conical or tapering heads, and a discharge opening at the lower end, a conical or tapering shell 3, surrounding the lower head of the shell 2 and forming therewith an annular dust receptacle, and a strainer 4 inclosing the inner shell .3 above the annular dust receptacle into which it o )ens at its lower end.

he casing 1, shell 2 and strainer 4 are preferably of cylindrical shape and when the parts are assembled are arranged coaxially with relation to each other. The main or outer casing 1 and the inner shell 2 may be conveniently made of metal, and the strainer 4 is preferably made of cloth.

An inlet pipe 5 secured in a central opening in the upper end of the casing 1, projects downwardly a short distance into the same. The upper head of the inner shell 2 is centrally perforated and attached to a flanged sleeve 6, which is removably fitted upon the end of the inlet pipe 5 projecting into the upper part of the casing 1. To the lower end of the sleeve 6 is attached a spiral pipe 7 which opens tangentially at its lower end into the upper part of the dust separating chamher 8 inclosed by the shell 2. A number of air outlet pi )es 9, lead upwardly from near the axis of t 10 chamber 8 through the upper head of the shell 2.

The cloth strainer bag 4 is supported at its upper end and spread and stretched taut by a resilient expansible frame composed of a central collar 10, spring wire arms 11, radiating from said collar, and arcuate cross pieces 12 secured to the outer ends of the arms 11 and forming a broken contractible ring. The.

ends of the cross pieces 12 are bent-inwardly and downwardly as shown at the left in Fig. 12, or are connected by tubes 13, as shown at the right, to avoid wrinkles in the strainer bag and prevent puncturing the same. Each of the tubes 13 is fixed to one of the cross pieces which it connects and slides freely upon the other. The clotharound the o ening in the upper end of the strainer t rough which the sleeve 6 passes, is reinforced by a sheet metal eyelet 14, folded over it, as shown in Figs. 11 and 14, a cord or wire being preferably folded in the cloth around the opening to prevent the cloth from being pulled out of the eyelet. The collar 10 with t e eyelet or ring 14 above it, is clamped on the sleeve 6, as shown in Fig. 14, between a shoulder on the sleeve and a nut 15 threaded on its upper end.

The strainer supporting and stretching frame tends by reason of the resiliency of the arms 11 and cross pieces 12, to assume and maintain the form in which it is shown in Fig. 12, so that when the strainer bag 4 is drawn over it and'fastened at the lower end as hereinafter explained, it will be spread and held taut by said frame, as shown in Figs. 1 and 14.

The casing 1 is provided on the inside some distance above its lower end with a ring 16, as shown in Figs. 1 and 8, having an inwardly projecting horizontal flange, and to the u per edge of the conical shell or dust receptac e 3, is attached a ring 17 having an outwardly projecting horizontal flange corresponding with the flange on the ring 16. The ring 17 is also formed or provided with an u wardly projecting rim or extension 18, which terminates at its upper edge in an outturned flange or bead. The 0 en lower end of the strainer bag 4 is attache to this rim or extension by a cord or wire, preferably a split ring of spring wire just below the outturned bead.

The shell 2 is provided on the outside adj acent to its lower tapering head with a ring 19 formed at intervals with radial lugs or wings which bear against the rim 18 and thus hold said shell central with relation to the casing 1 and strainer 4.

The truncated head at the lower end of the shell 2 and the truncated conical shell 3, are attached at their lower edges to a circular frame comprising two arallel obliquely flanged rings 20 and 21, which are connected on opposite sides as shown in Figs. 5 and 6, by posts or uprights 22 and 23. Within the rings of this frame is fitted a c lindrical closure 24, formed at its lower en with an outturned flange which with the lower ring 21 and an interposed gasket or packing ring, as shown in Fig. 1, forms an air tight joint. The closure is provided at its upper end on opposite sides, as shown in Fi 4, with outwardly projecting lugs 25, an the osts 23 are formed as shown in Figs. 5 an 6 with vertical grooves 26 to permit the insertion of the closure and the passage of said lugs above the inner edge of the upper ring 20, which slopes upwardly, as shown in Fig. 6, from the posts 23 toward the posts 22, so that when the closure is turned after being inserted in the frame, the flange at its lower end will be drawn up by said lugs tightly against the packing ring between it and the ring 21. The osts 22 and 23 are preferably made triangu ar in section, as shown in Fig. 5, to prevent dust and dirt from lodging behind them. The upper end of the closure 24 fittin into the ring 20, stops the o ening in the ower end of the chamber 8 and effectively cuts off communication between said chamber and the strainer chamber surrounding it through the dust receptacle 3. In the recess on its under side the closure is formed with a central cross web which stifiens and strengthens it and serves as a handle for inserting and removing it from the frame in which it is fitted.

To avoid the noise caused by the air escaping from the dust collector, the outlet 27 from the strainer chamber is connected with a mufller comprising a perforated pipe 28 coiled in the form of a volute around the conical shell or dust receptacle 3 and closed 'at its lower end. This pipe is inclosed by a conical or tapering case 29, which is attached as shown in Figs. 1 and 6, at its lower edge with the lower edge of the shell 3 to the ring 21. The space outside the inuffler pipe between the shell 3 and the case 29 is filledv with porous or fibrous material such as cotton, and the inclosing case 29 and the lower part of the casing 21 are perforated as shown in Fig. 1, to permit the escape of air discharged from the mufl'ler.

It will be-observed that the internal parts of the apparatus thus far described, comprising the shell 2, the shell or dust receptacle 3, the strainer 4 and the muffler, are connected with each other and are removable together bodily from the main or outer casing 1. To secure and hold these internal parts in place in the casin% it is provided on opposite sides as shown in igs. 2, 7, 8 at d 9, with f astenings 30. Each of these fastenings consists of a bolt 31, fitted to turn and slide in a barrel 32, which is attached to the casing 1. The bolt is formed at its inner end with an eccentric or cam 33, and at or near its outerend is provided with a radial pin or handle 34, which works in an angular slot in the barrel 32, a part of this slot being parallel with the axis of the barrel to permit end wise movement of the bolt, and a part transverse to said axis to permit rotary move-- When the bolts are thrust ment of the bolt. inwardly and their eccentrics 33 are turned upward y flange of the ring 17, as shown in ig. 8, sai flange is forced and held tightly a ainst the asket or packin ring interposed between 1t and the inwardly projecting flange of the against the outwardly rojectingv outer casing 1, and affords means for removing any dust which may work through the strainer 4 and in time accumulate in the space between said casing and the strainer.

As thus far described the apparatus is equally well adapted for operation by forcing air into it through the inlet pipe 5, as well as by exhausting the air therefrom through the outlet 27. An ejector is shown for exhausting air from the apparatus. This I ejector, as shown in detail in Fig. 3, has a compressed air supply connection 36, a jet nozzle 37, a combining tube 38, and a valve 39 controlling the admission of compressed air to the jet tube. The vacuum chamber 40 of the ejector is connected by a lateral branch and coupling 41 with the outlet 27 of the dust collector, and the discharge pipe 42 of the ejector is connected by a coup ing 43 and an' elbow 44 with the upper end of the 1 muffler pipe 28. A ring 45 of metal or heavy material, is attached to the strainer 4 as shown in Fig. 1, to dislodge the dustwhich adheres to the inner surface of the strainer, the apparatus being arred or shaken so as to cause the ring to strike against the casing 1, or inner shell 2, and thus jar the strainer.

The a paratus operates as follows: The injector being connected with a source of compressed air and a cleaning implement or other source of dust laden air being connected with the inlet pipe 5, when the ejector valve 39 is opened, air is exhausted from the dust collector through its'outlet 27 in the casing 1, and discharged into the mufiier, from which it escapes without noise through the holes in the pipe 28, thence through the porous or fibrous material surrounding said pipe and out through the holes in the inelosing case 29' into the lower part of the main casing, from which it esca es through the openings therein around its ase. Air being exhausted from the strainer chamber between the casing 1 and shell 2, induces a current of dust laden air through the inlet pipe 5 and the spiral pipe 7 into the chamher 8, the pipe 7 imparting a vertical or whirling movement to the air current in said" chamber whereby the particles of dust and dirt are thrown outwardly by centrifugal force against the shell 2 and are caused to settle in the lower part of said chamber, while the air, freed from a large part ofthe dust and dirt entrained therewith, flows upwardly in the center of the chamber and escapes therefrom through the pipes 9 into the upper part of the strainer 4. As the air passes outwardly through the strainer, the remaining dust carried thereby is caught by the strainer and falli-ng therefrom collects in the dust re ceptacle 3 at its base. The greater part of the dirt and dust having bccn scparal'cd from the air in the clnunbcr S, a much lurgcr voluinc of air will pass lhrough the straincr than would othcrwisc bc possiblc, and the area of lhc strainer as well as the size of the apparatus, may bc corrcspomlingly reduced. The air freed from dust passing out through the cjcctor into the llllllfltl pipe 38, issues therefrom in numcrous jcts into which it is divided, its velocity bcing nmterially reduced, so that its escape from the mulllcr will be practically noiseless. Should there be any dust left in the air after it passcs through thc strainer, as will sometimes happen when the apparatus is first started, it will be caught and hold by the porous or fibrous material enveloping the muffler pipe. By lifting and dropping the apparatus or moving it quickly sidewise so as to cause the ring 45 to strike against the inclosing casing I, or against the shell 2, dust adhering to the inside of the strainer will be removed therefrom and the meshes of the strainer will be kept clear. By removing thc closure 24 from time to time, the dust and dirt'coly lecting in the annular rcceptaclc and the lower end of the chamber 8, will be simultaneously discharged therefrom. 'lhcintcrnal parts of the apparatus are readily removed for inspection and repairs, or for the rcnewal of the strainer cloth, by turning and withdrawing the/bolts 31 as indicated by dotted lincs in Figs. 7 and 8, so as to rclcase theflanged ring 17 with which they normally engage. The strainer is easily and quickly detached from the sleeve 6 and from the rim 18 by unscrewing the'nut 15 and removing the cord or wire surrounding the rim 18.

Various changes in the details of construction and arrangcment of parts may be made within the scope of the following claims without de arting from the invention.

This app ication is a substitution for and continuation of application Ser. No. 235,936, filed December 8, 1904.

I claim:

1. In a dust collector, the combination of a closed upright chambcr of substantially cylindrical form, having an air and dust inlet at the up )cr end, a separate air outlet leading out of the central part of the chamber, an opening for the rcmoval of dust at the lower end and a closure for said opening,

means connected with thc inlct for impnrling to the air entcring said chamber a spiral movement around its walls, a dust ri-wcptic cle surrounding the basc of said chanibm', and a strainer surrounding thc upper part of said chamber and opening; at its lowcr end into said receptacle, substantiall as described.

2. In a dust collector the combination of a closed upright chamber having an inlet and a separate outlet near the upper end strainer chamber and the muffler, substan- .nected with the inlet and having a tan enand means for producing a current of air sucthereof, a strainer surrounding said cham-' her, a dust receptacle communicating with the interior of said strainer at its lower end, and an imperforate casing inclosing said strainer and having an outlet above said dust receptacle, substantially as described.

3. In a dust collector the combination of a closed-chamber having an inlet at the upper end and an outlet opening upwardly near the axis of said chamber, a pipe connected with said inlet and having a tangentially directed discharge into said chamber, a strainer surrounding said, chamber in communication with the outlet therefrom and means for causing a current of air to pass successively" through said chamber and strainer, substantially as described.

4. In a dust collector the combination of a closed chamber having an inlet at the u per end and an outlet leading upwardly rom near the axis of the chamber, a pipe .con-

tially directed discharge into said cham er, a strainer surrounding said chamber, an annular dust receptacle in communication with the interior of said strainer at its lower end cessively through said chamber and strainer, substantially as described.

5. In a dust collector the combination of a chamber having an air inlet at the upper end, an outlet leading upwardly from near its axis and a dust discharge opening at the lower end, a pipe connected with said inlet and having a tangentially directed discharge into said chamber, a strainer surrounding said chamber, an annular dust receptacle communicating with the interior of said strainer at its lower end and having a dust dischar e o ening at its lower end and a removabIe c osure for said dust discharge openings, substantially as described.

6. A dust collector comprising an inner dust separating chamber, a chamber surrounding said inner chamber and containing a strainer, a dust rece tacle at the bottom of the strainer cham er, a mufliler surrounding said dust receptacle, a connection between the strainer chamber and muffler and means for producing a current of air successively through the inner chamber, the

tially as described.

7. A dust collector comprising a casing closed at its upper end and open at its lower end and having an inlet at its upper end and an outlet, and internal arts comprising a dust separating chamber having an outlet opening into said casing and provided with means for closin said casing adjacent to its lower end and with an inlet at its upper end adapted to form a closed connection with the inlet of said casing when said internal parts are in place, substantially as described.

8. A dust 'collector comprising a casing closed at its upper end and 0 en atits lower end and having a tubular in et at its upper end and an outlet, and internal parts/comprisin a dust separating chamber having a dust ischarge opening at its lower end, a tubular inlet adapted to telescope with" the inlet of'said casing, an outlet opening into said casing and a removable closure for said discharge opening, substantially as described.

9. A dust collector comprising a casing closed at its upper end and open at its lower end and having an outlet and at its upper end a tubular inlet, and removable internal parts comprising a dust separating chamber having an outlet and a tubular inlet adapted to telescope with the inlet of said casing and a strainer connected with and surrounding said chamber between the outlet therefrom and the outlet in said casing, substantially as described.

10. A dust collector comprising a casing closed at its upper end and open at its lower end and having an outlet and at its upper end a tubular inlet, and removable internal parts comprising a dust separating chamber aving an outlet and a tubular inlet adapted to telescope with the inlet of said casing, a strainer connected with and surrounding said chamber between the outlet therefrom and the outlet in said casing, and a dust receptacle surrounding the lower end of said chamber and communicating with the in-' connection with the inlet of said casing, a

strainer connected with and surrounding said chamber between the outlet therefrom and the outlet in said casing, an annular dust receptacle surrounding the lower part of said chamber in communication with the interior of said strainer and having a dust discharge opening at its lower end, and a removable closure for stopping both of said dust discharge openings, substantially as ,described. V

1'2. In a dust collector, the combination of an imperforate casing having an air outlet, a closed chamber within said casing, having a dust discharge opening at its lower end and an air outlet near its upper end, an air inlet connection leading into the upper part of said chamber, said air inlet connection and outlet being constructed and arranged to cause separation within said chamber of dirt and dust from the inflowing air, a strainer surrounding said inner chamber within said casing, a dust rec-e vtacle located below and communicatingwith the interior of the strainer and having a dust discharge opening, means for closing said-dust discharge openings, and means for producing a current of air through said chamber and strainer, substantially as described.

13. In a dust collector the combination of a strainer bag and means for holding its closed ends distended comprising a number of radial spring arms and arcuate cross pieces attached to the outer ends of said arms, substantially as described.

14. In a dust collector the combination of a strainer bag and means for holding its closed end distended comprising a number of radial spring arms, arcuate cross pieces attached to the outer ends of said arms and tubes connecting ad acent ends of said cross pieces, substantially as described.

' 15. In a dust collector the combination of a dust separating chamber having a dust receptacle at its base, a tubular inlet connection at the upper end and an outlet, a strainer bag surrounding said chamber over its outlet and having an opening in its upper end through which said tubular inlet passes, means for forming a dust tight connection between said bag and tubular inlet and a frame mounted on said tubular inlet and having resilient arms for distending the upper closed end of said bag, substantially as described.

16. In a dust collector the combination of a dust separating chamber having a dust receptacle at its base, a tubular inlet connection at its upper end and an outlet, a frame mounted on said tubular inlet above said chamber and having resilient arms, a strainer bag drawn over and distended by said frame around the outlet from said chamber and having an eyelet in its upper closed end fitting on said tubular inlet and a nut threaded on said tubular inlet for securing said frame and eyelet together thereon, substantially as described.

17. In a dust collector the combination of dust receptacles arranged one within the other and having concentric o enings, a frame attached to said receptac es around said openings and having side openings in communication with the outer receptacle and a single removable closure fitted in said frame and adapted to stop the openin s in both receptacles, substantiallyas described.

18. In a dust collector, the combination of an imperforate casing having an air outlet, a closed chamber within said casing having an inlet and a separate outlet for air, and a dust discharge opening in the lower part thereof, a strainer surrounding said chamber between its air outlet and the air outlet from strainer and having a dust discharge opening in the lower part thereof, and a removable closure for both of said dust discharge openings and for shutting off communication between the lower part of said chamber and the interior ofthe strainer, substantially as'described.

19. In a dust collector the combination of a closed casing provided with a tubular inlet at its u er BIIL a dust separating chamber inclose in said casing and having a tubular inlet, which connects with the inlet through the casing and terminates within said chamber in a tangential discharge, and an outlet leading from the u per central part of said chamber, an annu ar dust receptacle surrounding the lower end of said chamber and having an opening at its lower end, a removable closure for said opening, a strainer surrounding the upper part of said chamber and the outlet therefrom and attached at its lower end to said dust receptacle anda closure between said dust receptacle and the inclosing casing adjacent to the lower end of the strainer, substantially as described.

20. In a dust collector the combination of a casing provided with a tubular inlet at its upper end, a dust separating chamber inclosed in said casing and having a tubular inlet which connects with the inlet through the casing and terminates within said chamber tangentially thereto and an outlet leading from the upper central part of said chamber, an annular dust receptacle surrounding the lower end of said chamber and having an opening at its lower end, a removable closure for said opening, a strainer surrounding the upper part of said chamber and the outlet therefrom and attached at its lowerend to said dust receptacle, a closure between said casing and dust receptacle adjacent to the lower end of the strainer, a muffler surrounding said dust receptacle and a connection between the muflier and the interior of the casing outside of the strainer, substantially as described.

21. In combination a dust separator having a dust receptacle at its lower end, and an air inlet and outlet, a mufiier comprising a perforated spiral pipe surroundin It said dust receptacle, a perforated case inc osing said pipe and porous material between said pipe and case, and a connection between the air outlet of the dust separator and said pipe, substantially as described.

22. In combination a dust separator, means for producing a current of air through said separator and a muffler comprising a perforated spiral pipe closed at one end and connected at the ot or end with the air outlet of the separator and the exhaust of the air current producing means, a perforated case inclosing said pipe and porous material foratedcase inclosing, said pipe, and. porous 1U between said pipe and case, substantially as material between said pipe and case, subdescribed. stantially as described.

23. In combination a dust separator hav- In Witness whereof I hereto all'lx my signaing an air inlet and outlet, means for producture in presence of tWo Witnesses. ing a current of air through said separator, FRANK J. M A'ICHICWIIC. and a muffler connected with the an outlet of said separator and comprising a perforated pipe surrounding said separator, a per- I Witnesses:

CHAS. L. Goss, A. J. SEALLEY. 

